Registration Dossier
Registration Dossier
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EC number: 205-287-8 | CAS number: 137-29-1
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1 January 2018 - 13 February 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 13320:2009
- GLP compliance:
- yes
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Mass median aerodynamic diameter:
- ca. 2.569 ca. µm
- Key result
- Percentile:
- D10
- Mean:
- 1.512 µm
- St. dev.:
- 0.014
- Key result
- Percentile:
- D50
- Mean:
- 2.417 µm
- St. dev.:
- 0.022
- Key result
- Percentile:
- D90
- Mean:
- 3.834 µm
- St. dev.:
- 0.031
- Conclusions:
- Copper dimethyldithiodicarbamate was analysed by standard visual observation using a 3.2 objective and 40 objective lens which confirmed that the substance supplied was compirised of single crystlline particles and the largest individual size was approimately 3.2microns. The laser diffraction method gave a volume weighted mean of 2.569microns, medium of 2.417microns and mode of 2.429microns. Percentage standard deviations for all volume weights were below 1. Coefficient of variation for D50 is less than 3%, D10 and D50 are less than 5%. Thus repeatability of the characteristic particles in the size distribution are within the acceptable limits as per the ISO 13320 -1 test standard.
Correlation between both methods was good. - Executive summary:
Copper dimethyldithiodicarbamate was analysed by standard visual observation using a 3.2 objective and 40 objective lens which confirmed that the substance supplied was compirised of single crystlline particles and the largest individual size was approimately 3.2microns. The laser diffraction method gave a volume weighted mean of 2.569microns, medium of 2.417microns and mode of 2.429microns. Percentage standard deviations for all volume weights were below 1. Coefficient of variation for D50 is less than 3%, D10 and D50 are less than 5%. Thus repeatability of the characteristic particles in the size distribution are within the acceptable limits as per the ISO 13320 -1 test standard.
Correlation between both methods was good.
Reference
Description of key information
Copper dimethyldithiodicarbamate was analysed by standard visual observation using a 3.2 objective and 40 objective lens which confirmed that the substance supplied was compirised of single crystlline particles and the largest individual size was approimately 3.2microns. The laser diffraction method gave a volume weighted mean of 2.569microns, medium of 2.417microns and mode of 2.429microns. Percentage standard deviations for all volume weights were below 1. Coefficient of variation for D50 is less than 3%, D10 and D50 are less than 5%. Thus repeatability of the characteristic particles in the size distribution are within the acceptable limits as per the ISO 13320 -1 test standard.
Correlation between both methods was good.
Additional information
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